#pragma once

#include <petscdm.h>
#include <petscdmdatypes.h>
#include <petscpf.h>
#include <petscao.h>
#include <petscfe.h>

/* SUBMANSEC = DMDA */

/*MC
     DMDA_STENCIL_STAR - "Star"-type stencil. In logical grid coordinates, only (i,j,k), (i+s,j,k), (i,j+s,k),
                       (i,j,k+s) are in the stencil  NOT, for example, (i+s,j+s,k)

     Level: beginner

     Note:
     Determines what ghost point values are brought over to each process; in this case the "corner" values are not
     brought over and hence should not be accessed locally

.seealso: `DMDA_STENCIL_BOX`, `DMDAStencilType`, `DMDASetStencilType()`
M*/

/*MC
     DMDA_STENCIL_BOX - "Box"-type stencil. In logical grid coordinates, any of (i,j,k), (i+s,j+r,k+t) may
                      be in the stencil.

     Level: beginner

.seealso: `DMDA_STENCIL_STAR`, `DMDAStencilType`, `DMDASetStencilType()`
M*/

PETSC_EXTERN PetscErrorCode DMDASetInterpolationType(DM, DMDAInterpolationType);
PETSC_EXTERN PetscErrorCode DMDAGetInterpolationType(DM, DMDAInterpolationType *);
PETSC_EXTERN PetscErrorCode DMDACreateAggregates(DM, DM, Mat *);

/* FEM */
PETSC_EXTERN PetscErrorCode DMDASetElementType(DM, DMDAElementType);
PETSC_EXTERN PetscErrorCode DMDAGetElementType(DM, DMDAElementType *);
PETSC_EXTERN PetscErrorCode DMDAGetElements(DM, PetscInt *, PetscInt *, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMDARestoreElements(DM, PetscInt *, PetscInt *, const PetscInt *[]);
PETSC_EXTERN PetscErrorCode DMDAGetElementsSizes(DM, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetElementsCorners(DM, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetSubdomainCornersIS(DM, IS *);
PETSC_EXTERN PetscErrorCode DMDARestoreSubdomainCornersIS(DM, IS *);

#define MATSEQUSFFT "sequsfft"

PETSC_EXTERN PetscErrorCode DMDACreate(MPI_Comm, DM *);
PETSC_EXTERN PetscErrorCode DMDASetSizes(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDACreate1d(MPI_Comm, DMBoundaryType, PetscInt, PetscInt, PetscInt, const PetscInt[], DM *);
PETSC_EXTERN PetscErrorCode DMDACreate2d(MPI_Comm, DMBoundaryType, DMBoundaryType, DMDAStencilType, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], DM *);
PETSC_EXTERN PetscErrorCode DMDACreate3d(MPI_Comm, DMBoundaryType, DMBoundaryType, DMBoundaryType, DMDAStencilType, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscInt[], const PetscInt[], DM *);

PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalBegin(DM, Vec, InsertMode, Vec);
PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalEnd(DM, Vec, InsertMode, Vec);
PETSC_EXTERN PetscErrorCode DMDANaturalToGlobalBegin(DM, Vec, InsertMode, Vec);
PETSC_EXTERN PetscErrorCode DMDANaturalToGlobalEnd(DM, Vec, InsertMode, Vec);
PETSC_DEPRECATED_FUNCTION(3, 5, 0, "DMLocalToLocalBegin()", ) static inline PetscErrorCode DMDALocalToLocalBegin(DM dm, Vec g, InsertMode mode, Vec l)
{
  return DMLocalToLocalBegin(dm, g, mode, l);
}
PETSC_DEPRECATED_FUNCTION(3, 5, 0, "DMLocalToLocalEnd()", ) static inline PetscErrorCode DMDALocalToLocalEnd(DM dm, Vec g, InsertMode mode, Vec l)
{
  return DMLocalToLocalEnd(dm, g, mode, l);
}
PETSC_EXTERN PetscErrorCode DMDACreateNaturalVector(DM, Vec *);

PETSC_EXTERN PetscErrorCode DMDAGetCorners(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetGhostCorners(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetInfo(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, DMBoundaryType *, DMBoundaryType *, DMBoundaryType *, DMDAStencilType *);
PETSC_EXTERN PetscErrorCode DMDAGetProcessorSubset(DM, DMDirection, PetscInt, MPI_Comm *);
PETSC_EXTERN PetscErrorCode DMDAGetProcessorSubsets(DM, DMDirection, MPI_Comm *);
PETSC_EXTERN PetscErrorCode DMDAGetRay(DM, DMDirection, PetscInt, Vec *, VecScatter *);

PETSC_EXTERN PetscErrorCode DMDAGlobalToNaturalAllCreate(DM, VecScatter *);
PETSC_EXTERN PetscErrorCode DMDANaturalAllToGlobalCreate(DM, VecScatter *);

PETSC_EXTERN PetscErrorCode DMDAGetScatter(DM, VecScatter *, VecScatter *);
PETSC_EXTERN PetscErrorCode DMDAGetNeighbors(DM, const PetscMPIInt **);

PETSC_EXTERN PetscErrorCode DMDASetAOType(DM, AOType);
PETSC_EXTERN PetscErrorCode DMDAGetAO(DM, AO *);
PETSC_EXTERN PetscErrorCode DMDASetUniformCoordinates(DM, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal);
PETSC_EXTERN PetscErrorCode DMDASetGLLCoordinates(DM, PetscInt, PetscReal *);
PETSC_EXTERN PetscErrorCode DMDAGetCoordinateArray(DM, void *);
PETSC_EXTERN PetscErrorCode DMDARestoreCoordinateArray(DM, void *);
PETSC_EXTERN PetscErrorCode DMDAGetLogicalCoordinate(DM, PetscScalar, PetscScalar, PetscScalar, PetscInt *, PetscInt *, PetscInt *, PetscScalar *, PetscScalar *, PetscScalar *);
/* function to wrap coordinates around boundary */
PETSC_EXTERN PetscErrorCode DMDAMapCoordsToPeriodicDomain(DM, PetscScalar *, PetscScalar *);

PETSC_EXTERN PetscErrorCode DMDACreateCompatibleDMDA(DM, PetscInt, DM *);
PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 10, 0, "DMDACreateCompatibleDMDA()", ) PetscErrorCode DMDAGetReducedDMDA(DM, PetscInt, DM *);

PETSC_EXTERN PetscErrorCode DMDASetFieldName(DM, PetscInt, const char[]);
PETSC_EXTERN PetscErrorCode DMDAGetFieldName(DM, PetscInt, const char **);
PETSC_EXTERN PetscErrorCode DMDASetFieldNames(DM, const char *const *);
PETSC_EXTERN PetscErrorCode DMDAGetFieldNames(DM, const char *const **);
PETSC_EXTERN PetscErrorCode DMDASetCoordinateName(DM, PetscInt, const char[]);
PETSC_EXTERN PetscErrorCode DMDAGetCoordinateName(DM, PetscInt, const char **);

PETSC_EXTERN PetscErrorCode DMDASetBoundaryType(DM, DMBoundaryType, DMBoundaryType, DMBoundaryType);
PETSC_EXTERN PetscErrorCode DMDASetDof(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetDof(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetOverlap(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetOverlap(DM, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetNumLocalSubDomains(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetNumLocalSubDomains(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetOffset(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetOffset(DM, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetNonOverlappingRegion(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetNonOverlappingRegion(DM, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDASetStencilWidth(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetStencilWidth(DM, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAMapMatStencilToGlobal(DM, PetscInt, const MatStencil[], PetscInt[]);
PETSC_EXTERN PetscErrorCode DMDASetOwnershipRanges(DM, const PetscInt[], const PetscInt[], const PetscInt[]);
PETSC_EXTERN PetscErrorCode DMDAGetOwnershipRanges(DM, const PetscInt **, const PetscInt **, const PetscInt **);
PETSC_EXTERN PetscErrorCode DMDASetNumProcs(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDASetStencilType(DM, DMDAStencilType);
PETSC_EXTERN PetscErrorCode DMDAGetStencilType(DM, DMDAStencilType *);

PETSC_EXTERN PetscErrorCode DMDAVecGetArray(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArray(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecGetArrayWrite(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayWrite(DM, Vec, void *);

PETSC_EXTERN PetscErrorCode DMDAVecGetArrayDOF(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayDOF(DM, Vec, void *);

PETSC_EXTERN PetscErrorCode DMDAVecGetArrayRead(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayRead(DM, Vec, void *);

PETSC_EXTERN PetscErrorCode DMDAVecGetArrayDOFRead(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayDOFRead(DM, Vec, void *);

PETSC_EXTERN PetscErrorCode DMDAVecGetArrayDOFWrite(DM, Vec, void *);
PETSC_EXTERN PetscErrorCode DMDAVecRestoreArrayDOFWrite(DM, Vec, void *);

PETSC_EXTERN PetscErrorCode DMDACreatePatchIS(DM, MatStencil *, MatStencil *, IS *, PetscBool);

/*MC
      DMDACoor2d - Structure for holding 2d (x and y) coordinates when working with `DMDA`

    Synopsis:
.vb
      DMDACoor2d **coors;
      Vec      vcoors;
      DM       cda;
      DMGetCoordinates(da,&vcoors);
      DMGetCoordinateDM(da,&cda);
      DMDAVecGetArray(cda,vcoors,&coors);
      DMDAGetCorners(cda,&mstart,&nstart,0,&m,&n,0)
      for (i=mstart; i<mstart+m; i++) {
        for (j=nstart; j<nstart+n; j++) {
          x = coors[j][i].x;
          y = coors[j][i].y;
          ......
        }
      }
      DMDAVecRestoreArray(dac,vcoors,&coors);
.ve

    Level: intermediate

.seealso: `DMDACoor3d`, `DMDAVecRestoreArray()`, `DMDAVecGetArray()`, `DMGetCoordinateDM()`, `DMGetCoordinates()`
M*/
typedef struct {
  PetscScalar x, y;
} DMDACoor2d;

/*MC
      DMDACoor3d - Structure for holding 3d (x, y and z) coordinates  coordinates when working with `DMDA`

    Synopsis:
.vb
      DMDACoor3d ***coors;
      Vec      vcoors;
      DM       cda;
      DMGetCoordinates(da,&vcoors);
      DMGetCoordinateDM(da,&cda);
      DMDAVecGetArray(cda,vcoors,&coors);
      DMDAGetCorners(cda,&mstart,&nstart,&pstart,&m,&n,&p)
      for (i=mstart; i<mstart+m; i++) {
        for (j=nstart; j<nstart+n; j++) {
          for (k=pstart; k<pstart+p; k++) {
            x = coors[k][j][i].x;
            y = coors[k][j][i].y;
            z = coors[k][j][i].z;
          ......
        }
      }
      DMDAVecRestoreArray(dac,vcoors,&coors);
.ve

    Level: intermediate

.seealso: `DMDACoor2d`, `DMDAVecRestoreArray()`, `DMDAVecGetArray()`, `DMGetCoordinateDM()`, `DMGetCoordinates()`
M*/
typedef struct {
  PetscScalar x, y, z;
} DMDACoor3d;

PETSC_EXTERN PetscErrorCode DMDAGetLocalInfo(DM, DMDALocalInfo *);

PETSC_EXTERN PetscErrorCode MatRegisterDAAD(void);
PETSC_EXTERN PetscErrorCode MatCreateSeqUSFFT(Vec, DM, Mat *);

PETSC_EXTERN PetscErrorCode DMDASetGetMatrix(DM, PetscErrorCode (*)(DM, Mat *));
PETSC_EXTERN PetscErrorCode DMDASetBlockFills(DM, const PetscInt *, const PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetBlockFillsSparse(DM, const PetscInt *, const PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetRefinementFactor(DM, PetscInt, PetscInt, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetRefinementFactor(DM, PetscInt *, PetscInt *, PetscInt *);

PETSC_EXTERN PetscErrorCode DMDAGetArray(DM, PetscBool, void *);
PETSC_EXTERN PetscErrorCode DMDARestoreArray(DM, PetscBool, void *);

PETSC_EXTERN PetscErrorCode DMDACreatePF(DM, PF *);

/* Emulation of DMPlex */
PETSC_EXTERN PetscErrorCode DMDAGetNumCells(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetCellPoint(DM, PetscInt, PetscInt, PetscInt, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetNumVertices(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetNumFaces(DM, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetHeightStratum(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAGetDepthStratum(DM, PetscInt, PetscInt *, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDAConvertToCell(DM, MatStencil, PetscInt *);
PETSC_EXTERN PetscErrorCode DMDASetVertexCoordinates(DM, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal);
PETSC_EXTERN PetscErrorCode DMDASetPreallocationCenterDimension(DM, PetscInt);
PETSC_EXTERN PetscErrorCode DMDAGetPreallocationCenterDimension(DM, PetscInt *);
